redis transaction

Today, when I was studying JDBC, I saw a problem about the isolation level of MySql transactions. I felt that the content was quite advanced. So I recorded an article for later use. There are four database isolation levels, as described in the high-performance mysql book: Then let's talk about how to modify the transaction isolation level: 1. Modify the global settings, modify the mysql. ini configuration file, and add 1 # optional parameters incl

I. Overview of transactions This section is purely for writing and writing, right when the knowledge of the database and familiar with how to write a blog, who let their dishes. ：） Read a lot of other blogs and materials, business two words are fast not to know, then actually the concept of business is very simple, can be understood as one thing, in the computer, it is a sequence of operations. It differs from ordinary things in that it must obey the acid principle specified by ISO/IEC.

1. What is a transaction:A transaction is a rigorous set of operations in a program, and all operations must be completed successfully, or changes made in each operation will be undone, which is the atomicity of the transaction (either success or failure).2. Transaction characteristics:Transaction characteristics are divided into four: atomicity (atomicity), cons

Label:Turn from: http://www.cnblogs.com/zemliu/archive/2012/06/17/2552301.html There are four levels of database isolation, as described in the "high Performance MySQL" book:Then talk about how to modify the transaction isolation level:1. Global modification, modify the Mysql.ini configuration file, at last add1 #可选参数有: read-uncommitted, read-committed, Repeatable-read, serializable.2 [mysqld]3 transaction-

There are four database isolation levels, as described in the "high-performance MySQL" Book:Then talk about how to modify the transaction isolation level:1. Global modification, modify the Mysql.ini configuration file, at last add1 #可选参数有: read-uncommitted, read-committed, Repeatable-read, serializable.2 [mysqld]3 transaction-isolation = Repeatable-readHere the global default is Repeatable-read, in fact, My

Redis service deployment and redis deployment Web programmer blog: http://blog.csdn.net/thinkercode Install Redis 1. Install Redis [root@localhost ~]# wget http://download.redis.io/releases/redis-3.0.2.tar.gz[root@localhost ~]# tar xzf

Article Home Directory About Redis Installing Redis under Linux about RedisRedis is one of the NoSQL (no only SQL, non-relational) databases that NoSQL stores data in the form of Key-value. The current mainstream distributed cache technology has REDIS,MEMCACHED,SSDB,MONGODB and so on. Redis can be und

specified command. 2. redis master-slave replication: Redis only needs to be configured on the slave server (slave: Slaveof 211.122.11.11 6379 # specify the master's IP address and port Masterauth Beijing # This is the password of the master host Info # view the status of the Master/Slave server. 3. redis transaction

I. Understanding of isolation Levels1. Dirty ReadingFirst, it is understood that a transaction has changed the data, although the transaction has not yet been committed, but at this point the data found by the other statements is changed after the transaction. Verify the following:A simple user tableWe run the following statement 1233 line, open the

Review of the spring transaction propagation mechanismSpring transaction One is misinformation very broadly: one transaction method should not invoke another transaction method, otherwise two transactions will be generated. As a result, developers shackled in the design of transact